400835005 has 4 divisors (see below), whose sum is σ = 481002012. Its totient is φ = 320668000.

The previous prime is 400834981. The next prime is 400835041. The reversal of 400835005 is 500538004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 233417284 + 167417721 = 15278^2 + 12939^2 .

It is not a de Polignac number, because 400835005 - 2¹³ = 400826813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40083496 + ... + 40083505.

It is an arithmetic number, because the mean of its divisors is an integer number (120250503).

Almost surely, 2^400835005 is an apocalyptic number.

It is an amenable number.

400835005 is a deficient number, since it is larger than the sum of its proper divisors (80167007).

400835005 is an equidigital number, since it uses as much as digits as its factorization.

400835005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80167006.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 400835005 is about 20020.8642420851. The cubic root of 400835005 is about 737.3186408407.

The spelling of 400835005 in words is "four hundred million, eight hundred thirty-five thousand, five".